Manitowoc 2250 Service Maintenance Manual

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 3-31
2250 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
3
D1 and D2 (digital outputs and inputs)
The status of the digital outputs from the controller and the
inputs to the controller is displayed in several banks in
screens D1 and D2. Each bank can indicate the state of up to
eight individual digital inputs or outputs.
1. 1 through 8 = Bank number
NOTE: X = The corresponding digital screen number (1 or
2) appears.
Each individual input/output is assigned a number (identifier)
in the binary system (powers of two). The identifiers of all
inputs/outputs that are on (active) are added to a total in
each bank. Thus, the number displayed for each bank is the
sum of all identifiers of the inputs/outputs that are on (0
through 255). With this system, each possible on/off
combination per bank has a unique total.
For identification of the digital outputs and inputs (and the
crane components connected to them), see Table 3-7
and
Table 3-8
.
To determine the state of the individual inputs/outputs in a
bank, find the number displayed for the bank in the first
column in Table 3-9
. In the corresponding row the identifier
numbers that are on (active) in the bank are shaded black.
Use Table 3-7 and Table 3-8 to identify the crane
components associated with the identifiers for the
corresponding bank.
Example 1: If the number displayed in Bank 3 of screen D2
is 41, go to row number 41 in Table 3-9
. The boxes for
identifiers 1, 8 and 32 are shaded black in this row, indicating
that the corresponding inputs are active. Find the component
description for the identifiers in Table 3-8
, Bank 3. In this
example, the inputs for High Speed Travel (identifier 1),
Drum 1 Brake (identifier 8), and Low Air Pressure (identifier
32) are active.
Example 2: You want to know if the controller output for the
Drum 2 Clutch is on. In Table 3-7
you will find Drum 2 Clutch
in Bank 1 (identifier 64). Look up the current number for Bank
1 in screen D1 (for example 152). Then go to the
corresponding row number (152) in Table 3-9
. Identifier 64
box is not shaded black in this row, indicating that the
controller output to the rear drum clutch is off.
All numbers in screen D1, and the pump/motor command
values in screens Drum, Swing, and Track, represent
controller commands to the corresponding output devices
only. The state of a certain output port on the controller may
not necessarily correspond to the actual state of the
associated crane component since the connection between
the controller and the component may be faulty due to loose
connections, corroded terminals, broken wiring, or
improperly operating components.
X
1
6
2
7
3
8
4 5
D
FIGURE 3-24

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English